Alembic Motion Blur
Posted: 28 December 2017 03:26 PM   [ Ignore ]  
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Hello!
I’m exporting a a cloth simulation with tear effect as an alembic file.
I’m trying to render with Octane but I have no success on render motion blur. It seems like the alembic has no vertex velocity info. I believe because of the tearing effect?. Is it possible to export vertex velocity with alembic file of a cloth sim from C4D?.
Thank you!
José

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Posted: 29 December 2017 10:17 AM   [ Ignore ]   [ # 1 ]  
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Hi José,

I wasn’t able to find anything. I have no hardware that supports Octance, so I can only guess, which feels really professional, sorry about that.

The only moment something was ringing promising was “Subframe Exporting” or “Vertex Colors” (The latter would perhaps need a plug in for that). Again, no idea if there is a possibility at all. Perhaps the Support has a workaround or idea, I don’t see one currently.

While searching, I only found this: Not what you ask for, as your question indicated the Standalone Render.

https://render.otoy.com/forum/viewtopic.php?f=30&t=63044&p=322310&hilit=subframe#p322310

All the best

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Dr. Sassi V. Sassmannshausen Ph.D.

Photography For C4D Artists: 200 Free Tutorials: Texture, Panorama, HDRI, Camera Projection, etc.
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Posted: 01 January 2018 01:12 PM   [ Ignore ]   [ # 2 ]  
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Hey Dr. Sassi
Thank you for your reply. It seams that the subframe motion blur is a nice workaround when having Motion Blur problems with octane.
I’ll have to investigate further though to export vertex velocity within the alembic file. I guess it might be an issue with the tearing effect, not sure.
THank you!
Thanks
José

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Posted: 01 January 2018 08:17 PM   [ Ignore ]   [ # 3 ]  
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Thanks a lot, José, for your reply.

You might suggest that to MAXON.
https://www.maxon.net/en-us/support/suggestions/

The Cloth based effect of tearing is not producing new Geometry, as in parts torn apart, for that the Cloth Objects needs to be added, otherwise: Polygons along the “split” will grow larger. So, I guess it needs more attention than just applying a vector to a given point. But I’m confident that there is a solution, but it needs some more people to point to that need, so developing time is assigned to this.

I saw the X-Particles tear effect in a preview, but I have not worked with it nor to see if there is maybe a better solution, given Alembic export as target. It seems to work differently, and duplicate edges, which should give a point velocity data, if available.


My best wishes

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Dr. Sassi V. Sassmannshausen Ph.D.

Photography For C4D Artists: 200 Free Tutorials: Texture, Panorama, HDRI, Camera Projection, etc.
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